19 F is what the truck air temperature said. The coolant and transmission indicators were in agreement. Pepper had been sitting for days. A single puff of water vapor exited the tailpipe when the motor caught having spun a revolution or two excess the normal. I gave her a second to bring the oil pressure up. About as long as it took me to put on my sunglasses and the instrumentation to cycle. It was a bright day with a light north wind.
Backing out of the drive silent as her shadow. Reaching the street I find drive and amble through the neighborhood toward the county road. I have time to scroll the instrument cluster and check the tire pressure and remind myself I put her away full. Good, there will be no stops today to delay an already late beginning to an otherwise long days drive. I peg this a 7 hour drive.
The 4.3 is a cold blooded creature and the fuel monitor shows it. Scan Gauge showing 7 mpg in the half mile to the highway and a 5 mpg average. I put the heater on recycle, the heat on high and leave the fan off waiting for my 150 F marker. The minimum I can expect something from the vents that resembles heat. First town in 2 miles away due west and I approach it at 50 mph in high gear coolant reading 130 F and trans 65 F. It drops back a few through town at the 30 mph speed limit. We won’t hit 150 F until Fairdale a few more miles down the road. I put the fan on low and watch it dip to 148 F as I slow to the 45 mph speed limit. Then rise slowly as I set the cruise to 55 mph. The state secondary speed limit. I will be in Stillman Valley 21 miles away before the gauge reaches something over 200 F.
At Byron the thermostat is playing with the idea of opening when I get to Mickey D’s. Time for some breakfast. The gauge falls back as I sit in the drive through and note that mileage fall from 22 to 20 during the wait. Any day now would be good. The drive girl thinks the Truck Fox is cute and giggles like school girls do. Why do they call this fast food?
I head west on the exit of town following state route 72 leaving the more picturesque 2 along the river for another day. My aunt is waiting for her visit. At 82 and in a nursing home she cherishes them.
At the 27 mile mark the thermostat finally pegs 213, opens and drops to 198 in seconds, cycles a few times and settles in at 204 a few under its engineering set 207. Finally. Crank up the heat and now my body is warming to the level of my hand holding my coffee. Trans temp, 130 F.
I will be in Mt. Carrol at the 73 mile mark when it rises above 160 F. The point lubricant is its most lubricous. It will reach 180 F by the time I cross the Mississippi some 95 miles from home and never venture above 185 for the day.
I reach Monticello 150 miles from home to the tenth in 3 hours and 18 minutes and have a trip average 24.2 mpg. An average 45.45 mph although the resolution on the instrument panel give 45 mph and my cruise set point has been 55 mph save those first 3 miles of the day done at 50.
Two hours later it’s time to say goodbye and head for home and dinner. Those 5 mph north winds are going to hold for the entire trip.
Having set for two hours things are cooled off but not dead cold. Just under a hundred on the transmission and about 75 for the coolant. I get the thermostat open in under 15 miles but I will be in Preston Iowa some 60 miles from my start before the trans is back to 180. Return mileage is over 25 mpg before I make 20 miles and finishes the day at 26.5 mpg for this leg of the trip. 9.5% higher on the return thanks to a warmer starting point even though the air temp never gets over freezing for the day.
I take one small deviation from the outbound path as the crow flies that shaves 4 miles from the trip. 146 miles in 3 hours and 6 minutes. 47.11 mph for the return due to lighter traffic in towns along the way and my short reroute bypassing on town entirely. I love rural America.
On the way home at 450th place and Iowa state road 64 she rolls over 20 K and I have just under a hundred to go to home.
Just a small amount of preheat makes a large difference in fuel usage on trips like this. Even more so when the trips are much shorter. That's good to know. Doesn't have to be up to operating temperature to reap 90% of the benefit.
20,000 / 511 = 39.14 mph life time average.